Hi Kevin,

# First attempt, user "astro", filter wheel plugged to the camera hub, 2 cameras + EFW :

[astro@astra:~]$ lsusb
Bus 001 Device 009: ID 03c3:462b
Bus 001 Device 010: ID 03c3:1604
Bus 001 Device 004: ID 04b4:6572 Cypress Semiconductor Corp.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

# Second attempt, user "root", filter wheel plugged to the camera hub:

[astro@astra:~]$ sudo lsusb
Bus 001 Device 009: ID 03c3:462b
Bus 001 Device 010: ID 03c3:1604
Bus 001 Device 004: ID 04b4:6572 Cypress Semiconductor Corp.
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

# Third attempt, user astro, filter wheel plugged directly to the Pi
[astro@astra:~]$ lsusb
Bus 001 Device 013: ID 03c3:462b
Bus 001 Device 011: ID 03c3:1604
Bus 001 Device 004: ID 04b4:6572 Cypress Semiconductor Corp.
Bus 001 Device 012: ID 03c3:1f01
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp. SMC9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

As you can see, the filter wheel ( Bus 001 Device 012: ID 03c3:1f01 ) doesn't show up when connected to the camera hub.
Not even under the root account.

It is only visible when plugged directly (the third attempt).

- Marc

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